John Mulaney will do a lot for his loved ones, but a round trip flight to grab a piece of mail? Maybe not.

When appearing on Late Night with Seth Meyers On Friday, December 20, host Seth Meyers asked how his wife Olivia Munn’s mother, Kim Munn, was doing and – of course – this Saturday Night Live alum, 42, gave a life update by sharing a hilarious story.

“She’s fine. She lives with us in California,” Mulaney told Meyers, 50. “I’m not sure how long this will last and – or why it’s really happening.”

Related: John Mulaney Shares the Unusual Gifts He Gave Daughter Méi for Her Three-Month Birthday (Exclusive)

After Kim moved in with the family, the comedian continued, “She got a real estate bill for her house in Oklahoma.”

To secure the mail, she asked Mulaney for a small favor – a round-trip flight.

Related: John Mulaney and Olivia Munn have two kids! All about Malcolm and Méi

“She asked me if I would book her a plane ticket back to Oklahoma to get the envelope out of the mailbox and then fly back,” he explained, eliciting a giggle from Meyers.

A confused Mulaney then asked Kim why she didn’t ask her sister — who is also her neighbor in Oklahoma — to just mail the bill to her current address in California, to which she apparently replied, “I don’t want it,” so far travel. But I don’t like my mail traveling that far.

So the comedian offered another solution. At the time, Kim’s husband wanted to return to Oklahoma, so he figured, “Why don’t you give him the check and he’ll fly back and mail it?”

“And she said, ‘I don’t want my check flying on the plane,'” Mulaney recalls. “So she wanted a round-trip ticket to post a letter in Oklahoma.”

After a pause to laugh, Meyers then teased, “So it sounds like things are going pretty well,” and Mulaney agreed, “Yeah, things are going well.” It’s minute by minute.”

However, he did not reveal whether and how Kim ultimately got her real estate bill.

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Kim officially became Mulaney’s mother-in-law earlier this year when he and Olivia, 44, tied the knot.

The couple married in July in a simple, intimate ceremony at a friend’s house in upstate New York, a source close to Mulaney told PEOPLE at the time. Only her son Malcolm Hiệp and a witness were present.

Related: Olivia Munn celebrates three months with daughter Méi — and shares sweet family moments with John Mulaney and son Malcolm

Months later, in September, the couple also welcomed a second child – and Malcolm’s younger sister, 3 – Méi June.

At the time, a source close to the couple told PEOPLE that the couple was “totally happy with Méi and Malcolm.”

“After everything they’ve been through, there’s no tighter, tighter little family,” the insider added.

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